Chirale Modifizierung zweikerniger Rutheniumcluster zur Entwicklung enantioselektiver Hydrierkatalysatoren
作者:Jean-Luc Wolfender、Frank Neumann、Georg Süss-Fink
DOI:10.1016/0022-328x(90)85430-7
日期:1990.6
phosphane-bridged compounds Ru2(CO)4(μ-OOCR)2(μ-L) (L = DPPE: 5: R = (R)-CPh(OMe)CF3, 6: R = (S)-CPh(OMe)CF3, 9: R = (R)-CPh(OH)H; L = (S,S)- CYCLOP: 7: R = (R)-CPh(OMe)CF3, 8: R = (S)-CPh(OMe)CF3; 10: L = (R,R)- DIOP, R = (R)-CPh(OH)H, 11: L = (S,S)-DIOP, R = (R)-CPh(OH)H), which have been tested as catalysts for the enantioselective hydrogenation of hydroxyacetone. The complexes 5–11 show satisfying catalytic
十二碳三钌与三倍过量的手性一元羧酸反应生成羧甲基桥联的锯齿型二钌络合物,可以将其分离为结晶乙腈加合物Ru 2(CO)4(μ-OOCR)2(MeCN)2(1: R =([R)-CPh(OME)CF 3,2:R =(小号)-CPh(OME)CF 3,3:R =([R)-CPh(OH)H)。PPh 3与3的反应生成空气稳定的Ru 2(CO)4(μ-(R)-(OOCPh(OH)H)2(PPh 3)2(4)。乙腈配合物也与二膦DPPE,CYCLOP和DIOP发生取代反应,生成膦桥联化合物Ru 2(CO)4(μ-OOCR)2(μ-L)(L = DPPE:5:R =(R)-CPh(OME)CF 3,6:R =(小号)-CPh(OME)CF 3,9:R =([R)-CPh(OH)H; L =(S,S) - CYCLOP:7: R =([R)-CPh(OME)CF 3,8:R =(小号)-CPh(OMe)CF